If you want more direct control over the user profile, the "Netplwiz" tool is a quick alternative. How To Change Your Windows 11 Username Fast!
While your login name and Start menu display will update, the folder path remains the same to prevent software shortcuts and system paths from breaking. Changing the actual folder name is a much riskier process involving Registry edits and is generally not recommended for casual users. Final Step: Sign Out how to change the name of my local account in windows 11 hot